Some of the information in this thread is incorrect. All Hadcock 228's and 242's use the 4-ball bearing; none are traditional unstabilized unipivots. In the earlier 228's, the arm tubes were aluminum, and the headshell angle was slightly incorrect. The 242's had steel arm tubes, slightly longer. At one point, a heavier-duty bearing structure became available in some models.
The current-manufacture 228's and 242's all use an upgraded 4-ball bearing structure and steel arm tube, and the headshell angle is correct. The only difference between the various Hadcock models now is the arm length and the quality of the wiring. I own and use a 242 Integra.
Having been surprised at the mass of my 242, I installed a Denon 103 just to see what would happen. It sounded *fabulous*!
Although the Hadcock is a pain to set up (especially after my JMW 10), it seems to be unusually versatile. I never would have guessed that the same tonearm could work with my high-compliance Music Maker 3 and a low-compliance unit like the 103!
The operating principle seems weird to me, but I can't argue with how it sounds.